Our product is a students Math Stamp, made of PP material, sturdy and practical, which can be portable and practical to use. This multiplication and division Math Roller Stamp is small and delicate, can be reused many times with ink, the seal is clear, and it will not fade after drying. Features -Color:Assorted Color -Material:PP -Size:6.50X5.50X2.20cm/2.55X2.16X0.86in -The Math Stamp is made of PP material, which can , and can be used for a long time. -This math stamp, which is made of PP material, is simple to use and speeds up the efficiency of pressing. -Roll the stamp at a constant speed on the white paper, and the math problem will appear in front of you. -Clear printing and no fading, math problem can be easily changed by turning the wheel. -This math stamp is small and delicate, can be reused many times with ink, the seal is clear, and it will not fade after drying. Package list: 1 x Math Roller Stamp 1 x Bottle of Ink